vice president joe biden has urged restraint and encouraged all parties to resolve their territorial claims peacefully. during a three-day swing through the region. and washington has said that the u.s. military will continue operating normally, refusing chinese calls for identification. but washington has also instructed civil airliners to follow beijing's new guidelines for the sake of safety. china has made the move to assert its claims over on the unpopulated islands, administered by japan, to force japan to back down, beijing has ratcheted up air and sea patrols and tokyo responded in kind of here to talk to us about china's aim and what is next are two leading asia analyst, bonnie glazer for the center for international studies and randy shriver the partner in armitage number who served in the state department as an asia hand during the bush administration. guy, welcome to the show. or welcome back. in both of your cases. bonnie, let me start with you, and i would like to get your view on this, randy, also. why did the chinese do this now? was it response to the pivot? a respon